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brilliants [131]
3 years ago
5

Double-jointedness occurs when there are two joints between bones that are normally governed by one joint

Biology
1 answer:
Ipatiy [6.2K]3 years ago
6 0
THis is absolutely false. It is often an action of hypermobility of the joints that helps to produce the limber effect that we see which is often termed as someone being double jointed while in fact they are singularly jointed not double jointed.
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The prolonged electrical depolarization of cardiac muscle cells that occurs during contraction is due primarily to the persisten
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This is how the ion that guarantees the duration of the action potential of the cardiac muscle cell is the Ca⁺⁺.

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Calcium, sodium and cardiac muscle cells brainly.com/question/4473795

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